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Chiral heteropolymolybdate, preparation method and non-linear optical applications thereof

A molybdate and heteropoly technology, applied in the field of chiral heteropoly molybdate, can solve the problems of high synthesis cost, low efficiency, difficult to break, etc., and achieves low raw material cost, clear structure, safe and simple operation. Effect

Active Publication Date: 2017-03-29
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly two methods for synthesizing chiral polyoxometalates: 1. Introducing chiral organic ligands or complexes as chiral inducers. Although this method is easy to obtain chiral polyacid compounds with novel structures, the synthesis high cost
2. Achiral raw materials are spontaneously resolved to crystallize chiral polyacid compounds. This method has the advantages of low raw material prices and low synthesis costs. It is a more economical and ideal strategy for synthesizing chiral polycompounds. The disadvantage is that it lacks predictability
Current research mainly focuses on the synthesis of chiral heteropolytungstate compounds. There are few studies on the nonlinear properties of chiral heteropolymolybdates, and the efficiency is not very good. 2ω = 2KDP, mainly because the high symmetry of heteropolymolybdate is contrary to chiral polyacid, and it is not easy to break

Method used

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  • Chiral heteropolymolybdate, preparation method and non-linear optical applications thereof
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Embodiment 1

[0030] The preparation of embodiment 1 chiral heteropolymolybdate comprises the following steps:

[0031] 1.235g sodium molybdate, 0.110g Na 2 TeO 3 Dissolve 0.113g of glycine in 20ml of water and stir, and adjust the pH to 3.5 with 4mol / L HCl, then add 0.176g of sodium chloride, continue to stir at room temperature for one hour, and then take a water bath at 80°C for one hour, filter after cooling, and place it for one month. to obtain the desired compound.

[0032] 1.235g sodium molybdate, 0.055g SeO 2 Dissolve 0.113g of glycine in 20ml of water and stir, and adjust the pH to 3.5 with 4mol / L HCl, then add 0.176g of sodium chloride, continue to stir at room temperature for one hour, and then take a water bath at 80°C for one hour, filter after cooling, and place it for one month. to obtain the desired compound.

Embodiment 2

[0033] The preparation of embodiment 2 chiral heteropolymolybdates comprises the following steps:

[0034] 1.235g sodium molybdate, 0.110g Na 2 TeO 3 Dissolve 0.113g of glycine in 20ml of water and stir, and adjust the pH to 3.5 with 4mol / L HCl, then add 0.147g of sodium chloride, continue to stir at room temperature for one hour, then take a water bath at 80°C for one hour, filter after cooling, and place it for one month. to obtain the desired compound.

[0035] 1.235g sodium molybdate, 0.055g SeO 2 Dissolve 0.113g of glycine in 20ml of water and stir, and adjust the pH to 3.5 with 4mol / L HCl, then add 0.147g of sodium chloride, continue to stir at room temperature for one hour, then take a water bath at 80°C for one hour, filter after cooling, and place it for one month. to obtain the desired compound.

Embodiment 3

[0036] The preparation of embodiment 3 chiral heteropolymolybdates comprises the following steps:

[0037] 1.235g sodium molybdate, 0.110g Na 2 TeO 3 Dissolve 0.113g of glycine in 15ml of water and stir, and adjust the pH to 3.5 with 4mol / L HCl, then add 0.176g of sodium chloride, continue to stir at room temperature for one hour, then take a water bath at 80°C for one hour, filter after cooling, and place it for one month. to obtain the desired compound.

[0038] 1.235g sodium molybdate, 0.055g SeO 2 Dissolve 0.113g of glycine in 15ml of water and stir, and adjust the pH to 3.5 with 4mol / L HCl, then add 0.176g of sodium chloride, continue to stir at room temperature for one hour, then take a water bath at 80°C for one hour, filter after cooling, and place it for one month. to obtain the desired compound.

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Abstract

The present invention belongs to the technical field of new polyacid chemical materials, and relates to a chiral heteropolymolybdate, a preparation method and non-linear optical applications thereof, wherein the chiral heteropolymolybdate belongs to the monoclinic system, the space group is P21, the crystal cell parameters comprise that a is 11.6485(9)angstrom, b is 13.9161(10) angstrom, c is 11.8748(8)angstrom and beta is 113.074(2)DEG when X is Te, and the crystal cell parameters comprise that a is 11.6276(5)angstrom, b is 13.9826(7)angstrom, c is 11.8503(7)angstrom and beta is 113.215(2)DEG when X is Se. According to the present invention, sodium molybdate, sodium tellurite or selenium dioxide and glycine are adopted as the raw materials, the synthesis yield is high, the obtained chiral heteropolymolybdate has the good second-order nonlinear optical properties, the powder frequency multiplication signal is 3.5 and 3.7 times of K2HPO4, the preparation process is simple, the product has high purity, and the obtained chiral heteropolymolybdate has potential non-linear optical application prospect.

Description

technical field [0001] The invention belongs to the technical field of new polyacid chemical materials, and in particular relates to a chiral heteropolymolybdate, a preparation method of the compound and its non-linear optical application. Background technique [0002] Polyoxometalates, referred to as polyacids, are composed of early transition metal ions (Mo Ⅵ ,W Ⅵ ,V Ⅴ ,Nb Ⅴ and Ta Ⅴ etc.) and oxygen atoms according to a certain structure to form a multinuclear complex. Because of its high thermal stability, redox, solubility and acidity and alkalinity, people have invested a lot of energy in researching its application in catalysis, optics, pharmacy, etc. (K.Kamata, K.Yonehara, Y. Sumida, K. Yamaguchi, S. Hikichi, N. Mizuno. Science., 2003, 300, 964-966; J. T. Rhule, C. L. Hill. D. A. Judd. Chem. Rev., 1998, 98, 327–358). So far, the synthesis of polyacids has a history of nearly 200 years, but there are relatively few studies based on chiral polyacids. The main rea...

Claims

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Application Information

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IPC IPC(8): C30B29/32C30B7/14G02F1/355
CPCC30B7/14C30B29/32G02F1/3551
Inventor 安海艳侯玉姣
Owner DALIAN UNIV OF TECH
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